/* Шестой блок: два структурированных кейса вместо длинных отзывов. */

.cases {
  --cases-gutter: clamp(16px, 1.4vw, 24px);
  --cases-columns: repeat(4, minmax(0, 1fr));
  --cases-pad: clamp(16px, 2vw, 30px);

  position: relative;
  padding: 0 var(--cases-gutter);
  overflow: clip;
  background: #fff;
  color: var(--color-bg);
}

.cases__grid-lines {
  position: absolute;
  inset: 0 var(--cases-gutter);
  display: grid;
  grid-template-columns: var(--cases-columns);
  pointer-events: none;
}

.cases__grid-lines span {
  border-left: 1px solid var(--color-light-grid);
}

.cases__grid-lines span:first-child {
  border-left: 0;
}

.cases__inner {
  position: relative;
  z-index: 1;
}

.cases__head {
  display: grid;
  grid-template-columns: var(--cases-columns);
  grid-template-rows: auto 1fr auto;
  min-height: clamp(660px, 92svh, 900px);
}

.cases__label {
  grid-column: 1;
  display: flex;
  align-items: flex-start;
  gap: 4px;
  margin-top: clamp(24px, 3vw, 42px);
  padding-right: clamp(12px, 1.4vw, 20px);
  font-size: 12px;
  line-height: 1;
}

.cases__label-num,
.cases__label-name {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  white-space: nowrap;
}

.cases__label-num {
  min-width: 46px;
  padding-inline: 12px;
  background: var(--color-red);
  color: #fff;
}

.cases__label-name {
  padding-inline: 12px;
  border: 1px solid var(--color-bg);
  background: #fff;
}

.cases__title {
  grid-column: 1 / -1;
  grid-row: 2;
  align-self: end;
  padding-bottom: clamp(24px, 3vw, 42px);
  font-family: "NAMU Display", Arial, sans-serif;
  font-size: clamp(58px, 8.7vw, 150px);
  font-weight: 400;
  line-height: 0.8;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.cases__title span {
  display: block;
}

.cases__title span:nth-child(2) {
  margin-left: 25%;
}

.cases__title span:last-child {
  margin-left: calc(50% + var(--cases-pad));
  color: var(--color-red);
  text-align: left;
}

.cases__intro {
  grid-column: 3 / 5;
  grid-row: 3;
  max-width: 50ch;
  padding: 0 var(--cases-pad) clamp(44px, 5vw, 72px);
  font-size: clamp(17px, 1.35vw, 20px);
  line-height: 1.32;
  letter-spacing: -0.018em;
  color: rgba(2, 10, 10, 0.64);
}

.cases__list {
  position: relative;
}

.cases__list::before,
.case::after {
  content: "";
  position: absolute;
  right: calc(-1 * var(--cases-gutter));
  left: calc(-1 * var(--cases-gutter));
  height: 1px;
  background: var(--color-light-grid);
  pointer-events: none;
}

.cases__list::before {
  z-index: 2;
  top: 0;
}

.case {
  position: relative;
}

.case::after {
  bottom: 0;
}

.case__summary {
  position: relative;
  display: grid;
  grid-template-columns: var(--cases-columns);
  min-height: clamp(128px, 11vw, 170px);
  align-items: center;
  cursor: pointer;
  list-style: none;
  transition: background-color 180ms ease;
}

.case__summary::-webkit-details-marker {
  display: none;
}

.case__summary:focus {
  outline: none;
}

.case__summary:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: -2px;
}

.case__summary::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0 calc(-1 * var(--cases-gutter));
  background: transparent;
  transition: background-color 180ms ease;
}

.case__summary:hover::before {
  background: #f5f5f5;
}

.case__num {
  grid-column: 1;
  align-self: start;
  padding: var(--cases-pad);
  font-size: 12px;
  color: rgba(2, 10, 10, 0.44);
}

.case__name {
  grid-column: 2 / 4;
  padding: var(--cases-pad);
  font-family: "NAMU Display", Arial, sans-serif;
  font-size: clamp(46px, 6.2vw, 96px);
  line-height: 0.82;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.case__shift {
  grid-column: 4;
  align-self: end;
  padding: var(--cases-pad) clamp(64px, 6vw, 94px) var(--cases-pad) var(--cases-pad);
  font-size: clamp(14px, 1.05vw, 16px);
  line-height: 1.25;
  color: rgba(2, 10, 10, 0.56);
}

.case__toggle {
  position: absolute;
  right: var(--cases-pad);
  width: 38px;
  height: 38px;
  border: 1px solid rgba(2, 10, 10, 0.3);
  border-radius: 50%;
}

.case__toggle::before,
.case__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 1px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.case__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.case[open] .case__toggle {
  border-color: var(--color-red);
  background: var(--color-red);
  color: #fff;
}

.case[open] .case__toggle::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.case__story {
  display: grid;
  grid-template-columns: var(--cases-columns);
}

.case__stage {
  min-height: clamp(270px, 24vw, 360px);
  padding: var(--cases-pad);
  border-left: 1px solid var(--color-light-grid);
}

.case__stage:first-child {
  border-left: 0;
}

.case__stage-label {
  margin-bottom: clamp(52px, 6vw, 92px);
  font-size: 12px;
  line-height: 1;
  color: rgba(2, 10, 10, 0.44);
}

.case__stage > p:last-child {
  max-width: 27ch;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.26;
  letter-spacing: -0.018em;
}

.case__stage--result {
  background: var(--color-red);
  color: #fff;
}

.case__stage--result .case__stage-label {
  color: rgba(255, 255, 255, 0.66);
}

.case:last-child {
  margin-bottom: clamp(80px, 9vw, 140px);
}

@media (max-width: 900px) {
  .cases {
    --cases-columns: repeat(2, minmax(0, 1fr));
  }

  .cases__grid-lines span:nth-child(n + 3) {
    display: none;
  }

  .cases__head {
    min-height: clamp(420px, 56svh, 540px);
  }

  .cases__title {
    font-size: clamp(48px, 9vw, 72px);
    line-height: 0.88;
  }

  .cases__title span:nth-child(2) {
    margin-left: 10%;
  }

  .cases__intro {
    grid-column: 1 / -1;
    padding-left: 0;
    padding-bottom: clamp(32px, 5vw, 48px);
  }

  .case__summary {
    grid-template-rows: auto auto;
    padding-block: 18px;
  }

  .case__num {
    grid-column: 1;
    grid-row: 1;
  }

  .case__name {
    grid-column: 1 / -1;
    grid-row: 1;
    padding-left: calc(25% + var(--cases-pad));
    padding-right: 72px;
    font-size: clamp(44px, 9vw, 72px);
  }

  .case__shift {
    grid-column: 2;
    grid-row: 2;
    padding-right: 72px;
  }

  .case__story {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case__stage:nth-child(odd) {
    border-left: 0;
  }

  .case__stage:nth-child(n + 3) {
    border-top: 1px solid var(--color-light-grid);
  }

  .case__stage {
    min-height: 210px;
  }

  .case__stage-label {
    margin-bottom: 36px;
  }
}

@media (max-width: 560px) {
  .cases__head {
    min-height: 360px;
  }

  .cases__label {
    grid-column: 1 / -1;
  }

  .cases__title {
    font-size: clamp(38px, 10vw, 48px);
    line-height: 0.9;
  }

  .cases__title span:last-child {
    margin-left: 0;
  }

  .cases__intro {
    padding-right: 0;
    padding-bottom: 32px;
    font-size: 16px;
  }

  .case__summary {
    grid-template-rows: auto auto auto;
    min-height: 172px;
    align-items: start;
  }

  .case__num {
    grid-row: 1;
    padding-bottom: 0;
  }

  .case__name {
    grid-row: 2;
    padding-left: var(--cases-pad);
    padding-top: 10px;
    padding-bottom: 10px;
    font-size: clamp(34px, 10vw, 44px);
  }

  .case__shift {
    grid-column: 1 / -1;
    grid-row: 3;
    padding-top: 0;
    padding-left: var(--cases-pad);
  }

  .case__toggle {
    top: 65px;
    right: 16px;
    width: 34px;
    height: 34px;
  }

  .case__story {
    grid-template-columns: 1fr;
  }

  .case__stage {
    min-height: 0;
    padding: 22px 16px;
    border-top: 1px solid var(--color-light-grid);
    border-left: 0;
  }

  .case__stage-label {
    margin-bottom: 28px;
  }

  .case:last-child {
    margin-bottom: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case__summary,
  .case__summary::before,
  .case__toggle::before,
  .case__toggle::after {
    transition: none;
  }
}